Bash script to add git branch and docker machine info to prompt

git_branch_and_docker_machine_prompt.sh

#! /bin/bash

# Most of this is taken from:
#
#   https://coderwall.com/p/fasnya/add-git-branch-name-to-bash-prompt
#
# Just modified it to also include the current docker machine being
# used, if any.

parse_git_branch() {
  git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'
}

show_docker_machine_name() {
  if [ -n "${DOCKER_MACHINE_NAME}" ]
    then
      echo " (${DOCKER_MACHINE_NAME})"
  fi
}

export PS1="\u@\h \[\033[32m\]\w\[\033[33m\]\$(parse_git_branch)\[\033[35m\]\$(show_docker_machine_name)\[\033[00m\] $ "